Hi.i jst want yoú to start a thread about yamaha r15 or p220 its that i cant start as i m not profestional let people knwo what a clutch plate is and how it works what is carburator how fuel get combustion lets say teache us what is machanism of bike my age is 18 so i only know about carburator you make a group of good people and work on i m sure people will love.tel them abt fi and dtsi diffrence.